The deck shores up all of the weaknesses that people associate with the
Dragon-deck meta, thriving around massive board clear and taunts
followed by strong/game-ending minions.

Wild Pyromancer, Holy Nova, and Lightbomb along with Smite, Vol'jin, Shadow Words, Holy Fire and
Blackwing Corruptors provide ample board clear, and the
Sunfury/Defender combined with dragons make for excellent control.
Power Word: Shield/Azure Drake+Chromaggus for fun card duplication, as
well as Nefarian. Despite the lack of Northshire and Thoughtsteal, the
deck rarely seems to run out of cards, mainly because so many of the
cards trade up in value.

Most games end up with a hand full of AoE and dragons that eventually
just outpace whatever sort of opponent you're up against. Shadowform
provides an extra clincher that seals the game against most aggro decks
while providing overbearing board control late-game. More often than not
opponents will get you down to 10-15 health before turns 5 and 6, and
by that point you'll have enough control in your hand to turn the tables
on them.

Some tech that I've looked at include Volcanic Drakes vs Azure
Drakes, since they've made for some fun AoE+Drake turns in the past. But
they're too squishy and conditional for my taste. Bloodmage Thalnos is a
solid early game card to combo with Smite and Holy Nova. Putting in
more win conditions is always an option, too, whether that's Ragnaros,
Sylvanas, Sneed's, etc.

Most common problems this deck faces are paladins and control
warriors. It's not easy to deal with divine-shielded minions or the set
of tools that control warriors bring to the table. Patrons aren't a huge
problem vs Azure+Holy Nova/Smite, Lightbombs, or Corruptors. The deck
does really well vs aggro of all kinds, though, in my experience.